Home / 3,119.21-4,670.73-1,729.65

Finding the Fourth Proportional to 3,119.21, 4,670.73 and 1,729.65

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Solution

The fourth proportional to 3,119.21, 4,670.73 and 1,729.65 is: 2,590.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.21 : 4,670.73 = 1,729.65 : x
  2. Step 2: Convert to fraction form
    3,119.21/4,670.73 = 1,729.65/x
  3. Step 3: Cross multiply
    3,119.21x = 4,670.73 × 1,729.65
  4. Step 4: Simplify right side
    3,119.21x = 8,078,745.66
  5. Step 5: Solve for x
    x = 8,078,745.66/3,119.21
  6. Step 6: Final answer
    x = 2,590.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.